CHAPTER68 Configuration Parameters Reference
Mediant 1000 Gateway & E-SBC | User's Manual
Parameter Description
If the ComfortNoiseNegotiation parameter is disabled, then the
device does not send “CN” in the SDP. However, if the codec’s
SCE is enabled, then CNG occurs.
Note: The parameter is applicable only to the Gateway
application.
configure voip >
sip-definition
settings > sdp-
ecan-frmt
[SDPEcanFormat]
Defines the echo canceller format in the outgoing SDP. The
'ecan' attribute is used in the SDP to indicate the use of echo
cancellation.
■ [0] = (Default) The 'ecan' attribute appears on the 'a=gpmd'
line.
■ [1] = The 'ecan' attribute appears as a separate attribute.
■ [2] = The 'ecan' attribute is not included in the SDP.
■ [3] = The 'ecan' attribute and the 'vbd' parameter are not
included in the SDP.
Note: The parameter is applicable only when the IsFaxUsed
parameter is set to 2, and for re-INVITE messages generated by
the device as result of modem or fax tone detection.
'First Call Ringback Tone
ID'
configure voip >
sip-definition
settings > 1st-
call-rbt-id
[FirstCallRBTId]
Defines the index of the first ringback tone in the CPT file. This
option enables an Application server to request the device to play
a distinctive ringback tone to the calling party according to the
destination of the call. The tone is played according to the Alert-
Info header received in the 180 Ringing SIP response (the value
of the Alert-Info header is added to the value of the parameter).
The valid range is -1 to 1,000. The default is -1 (i.e., play standard
ringback tone).
Note:
■ It is assumed that all ringback tones are defined in sequence
in the CPT file.
■ In case of an MLPP call, the device uses the value of the
parameter plus 1 as the index of the ringback tone in the CPT
file (e.g., if this value is set to 1, then the index is 2, i.e., 1 +
1).
'Reanswer Time'
configure voip >
sip-definition
settings >
reanswer-time
[RegretTime]
Analog: Defines the time interval from when the user hangs up
the phone until the call is disconnected (FXS). This allows the
user to hang up and then pick up the phone (before this timeout)
to continue the call conversation. Thus, it's also referred to as
regret time.
Digital: Defines the time period the device waits for an MFC R2
Resume (Reanswer) signal once a Suspend (Clear back) signal
is received from the PBX. If this timer expires, the call is
released. Note that this is applicable only to the MFC-R2 CAS
Brazil variant.
The valid range is 0 to 255 (in seconds). The default is 0.
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